Alice, We Got a Gift Card But It's Empty -- Ask Alice: Advice for Life at Home

Pin it Hi Alice, I recently invited my friend and her family to my son's birthday party. They brought my son as a gift: a pre-paid MasterCard gift card. Now, after couple of months, my son tried to use the MasterCard but discovered that it's empty; there is no money on that card. We already have sent them a thank you card. How should I let them know about it or should I just leave the matter as it is? Thank you, Cardless